diff --git a/.htaccess b/.htaccess
index df33866d7af42be6680bf62bae634c3bfe1221f1..d56cfb5b3f3f19fc1d3eb1962188f237624110b6 100644
--- a/.htaccess
+++ b/.htaccess
@@ -13,6 +13,7 @@ RewriteCond %{HTTP_HOST} =www-lrr-dev.doc.ic.ac.uk
 RewriteRule ^ca($|/) http://psvg.doc.ic.ac.uk/research/concurrency.html [R=301,L]
 
 RewriteCond %{HTTP_HOST} !=psvg.doc.ic.ac.uk
+RewriteCond %{HTTP_HOST} !=psvg-dev.doc.ic.ac.uk
 RewriteCond %{HTTP_HOST} !=www-rr-dev.doc.ic.ac.uk
 RewriteRule ^(.*)$ http://psvg.doc.ic.ac.uk/$1 [R=301,L]